alex_t wrote:
Are there any specific instructions for photographers on the
Underground? I was standing at the Baker Street station (Metropolitan
line platform) and tried to make photo of the local junction (at the
moment when train was passing it) - I was approached by two policemen
and told to stop photography and delete existing photos (they even
checked that the photos were deleted) as no photography allowed on the
Underground anymore due to the threat of the terrorism.

Visitors from the NYPD, perhaps?
--
David of Broadway
New York, NY, USA